You create a Windows Forms application by using the .NET Framework 3.5. The application is used for audio/video management. The application provides the following features:

* Usage license for music or video can be purchased from an online store.
* Backup of music and video for disaster recovery can be done.
* Custom playlists can be created to organize downloaded content.

The application has the following requirements:
* A license file is required to play local music or video.
* Users can access previously-purchased content from any computer that runs the application.
* User theme settings for the UI might only be customized for each computer.

You need to design a state and data management strategy that meets the requirements.What should you do?

A.
Store license files in the User.config file.Store content files on the online store database.Store custom playlists in the User.config file.Store theme settings on the online store database.

B.
Store license files in the User.config file.Store content files in the local user isolated storage.Store custom playlists in the local user isolated storage.Store theme settings in the User.config file.

C.
Store license files in the local user isolated storage and on the online store database.Store content files in the local user isolated storage.Store custom playlists in the User.config file.Store theme settings on the online store database.

D.
Store license files in the local user isolated storage and on the online store database.Store content files in the local user isolated storage.Store custom playlists in the local user isolated storage.Store theme settings in the User.config file.